Footwear sole



FIG. 1 is a right side perspective view from below of a footwear sole showing my new design;

FIG. 2 is a left side perspective view from below thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a back elevational view thereof. 

The ornamental design for a footwear sole, as shown and described. 